Memcached (again?!?)
I have only WordPress sites on my server. The server Currently is configured with CentOS v7.9.2009 STANDARD kvm and WHM/cPanel. Everything is on PHP 8.1.
I had my host install Memcached, as a solution the error message WordPress throws, "a persistent object cache should be used". After that, I installed the Use Memcached plugin, followed the instructions for it. The error was no longer seen.
I have also been using the pro version of WP-Optimize as a page cache.
Strange note to this situation...
Not every site throws the object cache error! I use the exact same set of plugins and themes on Every site, so I'm not sure what's going on there either. *shrug*
Enough background (I hope), now on to the issues...
1. Memcached has been going down on my server, repeatedly. Server was rebooted, and it still goes down shortly after that. My webhost says they can dig in deeper, but they also want to charge me for that. They also said they can reinstall it first and see if that helps. They are happy to do the reinstall for free.
2. I had one of my sites loose the Pages link in the dashboard! Disabling the Use Memecached plug in, solved that issue. So right now, I'm rapidly becoming less and less of a fan of Memcached by the minute! lol
3. I removed Use Memcached and WP-Optimize on one of my sites, and installed the W3 total cache plugin it. It SEEMS to be a much better solution than the other two plugins? Downside being the pro version is Quite expensive! During the Setup of W3, on the Object Cache screen, it lists a whole bunch of other options besides Memcached!
Redis, APC, eAccelerator, XCache and WinCache. (see screenshot)
So my questions are..
1. Should I even be using Memcached? Or would one of the other listed options be better? Or should I be going in an entirely different direction here? *shrug*
2. Should I upgrade my server software before anything else? I'm getting the centOS 7 warnings in WHM already. What would be the best option(s) here?
Sorry for the long post. I'm such a Webelo at this sever stuff. :(
Thanks in advance for the help!
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If using memcached, it's best to add it to chksrvd so in the event the memcached service fails or you restart the server, the memcached service will be restarted automagically for you. 0 -
1. Should I even be using Memcached? Or would one of the other listed options be better? Or should I be going in an entirely different direction here? *shrug*
WordPress lists object cache under "recommended improvements", not "critical issues". You don't implement object cache just to get rid of the message, you do that to improve performance which may or may not be necessary in each individual case. Whether your WordPress website will benefit from object cache depends upon a number of factors including your webserver software and page caching plugins used. Statistically, only a small percentage of WordPress websites will noticeably benefit from object cache on a typical shared server with a properly optimized webserver and page caching. Sometimes there can even be negative impact on performance from implementing object cache.0 -
I wouldn't expect the memcached service to be crashing frequently. If your license is purchased through us, that's something we'd want to look into for sure. I'd start with checking /var/log/messages to see if you can find more details about *why* that service is crashing. 0 -
I wouldn't expect the memcached service to be crashing frequently. If your license is purchased through us, that's something we'd want to look into for sure. I'd start with checking /var/log/messages to see if you can find more details about *why* that service is crashing.
Yes it was, and I can open a ticket, but i really didn't want to waste time on it, if it really ISN'T the best option here! This is basically what I want to explore first, what the BEST option is for caching, and speeding up the website. Would the Lightspeed server be a better option than anything else? Or is that a whole different deal? Let's start with This question first... :)0 -
Litespeed is a whole different deal. It's not a bad deal, just different, and many people do see improvement when switching to that. Once you have Litespeed installed, there is a WordPress plugin option to utilize that for caching, but none of that would be related to the cPanel side of things. 0 -
Litespeed is a whole different deal. It's not a bad deal, just different, and many people do see improvement when switching to that. Once you have Litespeed installed, there is a WordPress plugin option to utilize that for caching, but none of that would be related to the cPanel side of things.
And what about these other options? Redis, APC, eAccelerator, XCache and WinCache.0 -
We don't offer support for any of those tools. eaccelerator has long been deprecated (GitHub - eaccelerator/eaccelerator: DEPRECATED: eAccelerator PHP opcode cache), Redis is only available in containers, APC hasn't been offered for years, Xcache has also been deprecated for many years, and Wincache has that "Win" in front of it so that won't be an option. 0 -
We don't offer support for any of those tools. eaccelerator has long been deprecated (
Excellent. Good info. Thanks. So the only real options are Memcached and LiteSpeed, IF i'm understanding this right?0 -
As someone that has used both Apache and LiteSpeed extensively, I can say the extra cost of LiteSpeed is well worth the money spent. LiteSpeed scales better and uses far less system resources than Apache. If you're looking to improve overall speed of your web server(s), LiteSpeed is an excellent option. 0 -
@rivermobster - it doesn't at all. 0 -
Long term follow up...
I gave up on memcached. It was one issue after another! Would give 0 stars if possible. :P
My hosting company installed NGINX for me and it seems to be working fabulously. A lot less drain on my server resources and all my sites Definitely seem to load faster. 5 stars so far.
-Joe
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Thanks for sharing that follow-up! I too am a fan of Nginx, so I'm glad to hear it's working well for you.
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Ya I saw the persistent object cache recommendation in Wordpress lately. I run WP Fastest Cache on my sites. I know that is different than a memory based cache. My sites all run great and I have a 4 dedicated CPU VDS with 8GB memory and it is way underutilized. 1Gbit ethernet speed. You confirmed my gut that messing around with installing persistent object cache's may just cause headaches. We can sometimes get a little too obsessed with performance outside practical user experience and thereby the saying "if it ain't broke, don't try to fix it, applies" After 30 years sysadmin experience that saying has saved me hundreds of hours of beating my head against the wall (especially in the days I was dealing with Windows Servers!)
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